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A Case Study of the New Center-Cut Method in Tunnel : SAV-Cut(Stage Advance V-Cut)  

Kim, Dong-Hyun (GS건설 기술본부)
Lee, Sang-Pil (GS건설 기술본부)
Lee, Hun-Yeon (GS건설 기술본부)
Lee, Tae-Ro (성보지오텍)
Jeon, Seok-Won (서울대학교 지구환경시스템공학부)
Publication Information
Explosives and Blasting / v.25, no.1, 2007 , pp. 31-43 More about this Journal
Abstract
In most tunnel constructions in South Korea, blasting has been widely used as an excavation method. In tunnel blasting, the center-cut to induce first free surface is very important for enhancing excavation efficiency and reducing vibration caused by exploding. This paper introduces new center-cut method named SAV-cut (Stage Advance V-cut) developed on the concept of V-cut. Significant features of SAV-cut are the center hole and stepwise ignition. Many field tests and numerical analysis were carried out to analyze the mechanical behavior and blasting vibration. From the results, the newly developed SAV-cut was proved as an effective center-cut method for both increasing blasting efficiency and decreasing blasting vibration.
Keywords
center-cut; center hole; stepwise ignition; blasting efficiency; blasting vibration;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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